feat(keys): vim keys in any layout, z motions, no Option chords

Keys on a non-Latin layout map to their physical US position, so j, k,
gg and / work on the Russian layout. Lists get z z, z t, z b, and the
first row scrolls the page to the top. The editor drops Alt chords for
Esc then a letter, reorder in groups, piggy banks and subscriptions
moves to J and K.

src/routes/subscriptions/+page.svelte

@@ -181,27 +181,13 @@
     extra: () => [
       {
         group: "Subscriptions",
-        keys: "alt+j",
+        keys: "J",
         label: "Move down in group",
         run: () => move(1),
       },
       {
         group: "Subscriptions",
-        keys: "alt+k",
-        label: "Move up in group",
-        run: () => move(-1),
-      },
-      {
-        group: "Subscriptions",
-        hidden: true,
-        keys: "alt+∆",
-        label: "Move down in group",
-        run: () => move(1),
-      },
-      {
-        group: "Subscriptions",
-        hidden: true,
-        keys: "alt+˚",
+        keys: "K",
         label: "Move up in group",
         run: () => move(-1),
       },